Questions about RGB; short for red, green, blue. It's the colour process and model used in colour visualisation on digital devices. Ask anything relevant to graphic design about the RGB colour model.

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29
votes
9answers
12k views

What is the difference between CMYK and RGB? Are there other color spaces I should know?

I'm a photographer, who dabbles in graphic design from time to time as well. What are the differences between the various color spaces?
17
votes
4answers
6k views

What's the difference between CMYK Black and RGB Black

I know this sounds a stupid question, black is black right? Wrong: It's black right? so why are the CMYK Values so far away from black?
17
votes
1answer
440 views

How to get standard results in colour management in Linux

I have recently calibrated and profiled my screen, with a ColorHug device. I'm using Gnome, and have the profile installed through gcm. When opening an image in GIMP and DigiKam, the results are ...
15
votes
8answers
4k views

RGB and CMYK: Why both?

Any of you who have at least little experience with graphic design software, photography or professional printing, must have -almost undoubtedly- have gone through this: 'the struggle' of RGB and CMYK ...
10
votes
4answers
8k views

What's the point of converting RGB images to CMYK TIF/TIFF before placing them in InDesign?

Currently we receive CMYK TIF/TIFF images of photographs from our design agency (who get them from the photographer). Our in-house designers then place them in InDesign for posters and magazines, or ...
9
votes
2answers
2k views

What's the difference between Monitor RGB and sRGB?

Since the output is web, RGB is choosen, but is there any difference between "Monitor RGB..." and "sRGB..."? In Photoshop, they are both under color settings > working spaces > RGB
8
votes
2answers
249 views

Does hue/sat/lum offer a smaller range of colors than RGB?

All values of RGB should be unique and distinguishable, meaning there are truly 256*256*256 colors. In HSL, however, if L=0 then H and S can be anything, but you still get the same color (black). ...
8
votes
1answer
2k views

What is HSB really?

Can any of my graphics designer friends explain HSB to me? I know it's hue/saturation/brightness and I know what those three do (for the most part)... I understand the algorithm of creating colors ...
8
votes
1answer
3k views

If I make a design in RGB mode and then change it to CMYK how will it look when it's printed?

I'm making a business card in Photoshop and it needs to be in CMYK mode. Now, I'm using a logo on it that I previously made for the client in RGB mode and when I put it into the CMYK mode business ...
8
votes
1answer
126 views

Creating a color scheme that looks good on screen and when photocopied in black and white

I'm trying to create a color scheme for text headlines that will have distinctly different colors for each level of header, but will also print out mostly dark. I looked at http://colorbrewer2.org/ , ...
7
votes
1answer
578 views

if you accidently make a document in working CMYK how can you change it to RGB?

if you accidently make a document in proof setup 'working CMYK' is there any easy way to convert the document to RGB without the colours getting washed out?
5
votes
2answers
9k views

How does a monitor display the CMYK color? Is it actually showing the true CMYK color?

Just few moments ago I asked a question regarding RGB to CMYK conversion. say, RGB (86,92,214) the color in my image. Then monitor uses same values for displaying (lightning LEDs, LCDs or CRTs). ...
5
votes
3answers
2k views

Completely different interpretation of Pantone to RGB values depending where I look.

I'm making a web site and have been told the corporate color is pantone 2745. In illustrator, here, and here it is a deep indigo color. Here, here, here and here it is a deep violet sort of color. ...
4
votes
10answers
1k views

How can I find out what RGB colors a website uses?

I want to learn the CMYK/RGB or any other details of a colour on a website. Say the side/background of this very website. I want to recreate that colour. Can anyone help me? Or is there any specific ...
4
votes
3answers
6k views

PANTONE and color conversions

I have been given a standard color palette. The colors are defined in terms of PANTONE #### X for example PANTONE 1234 C. Followed by their CMYK, RGB and HSB values. Another page defines ...
4
votes
3answers
383 views

A selection of colors that spans the range of the RGB color spectrum?

Below is a screenshot of a small application I am building. I would like to cover the most significant colors from whole color spectrum, but I am missing lots of colors. I don't get the intended ...
4
votes
3answers
447 views

Simplest set of inks that could print the RGB gamut?

Artist Tauba Auberbach produced this recently: It's called RGB Colourspace Atlas, and is a physical, printed book of what it implies is the whole RGB colour space. Is there an existing ...
4
votes
2answers
9k views

Is there a freely available CMYK color chart that I can print on press and work with?

After reading the answers to my previous questions, How does a monitor display the CMYK color? Is it actually showing the true CMYK color? I'm very much convinced that I need to profile my monitor if ...
4
votes
2answers
773 views

Colouring illustrations - RGB or CMYK?

I am in the process of colouring a series of hand-drawn illustrations in Photoshop using a graphics tablet. The colouring process takes place mostly using Photoshop's native drawing tools - the ...
4
votes
2answers
713 views

RGB to CMYK conversion problem

I'm having a rather annoying problem! I have RGB images made in Photoshop that I need to convert to CMYK. When I save the file my black background is converted to a light grey! I tried deleting my ...
3
votes
1answer
379 views

“Black text has been set up so it prints as 4 colours, rather than just black” - what?

I'm currently dealing with a printer, who I've been working with for a year or two. We've sent off to had one of our brochures reprinted - the same files as last time, except now they're having some ...
3
votes
1answer
460 views

Antonym of Pastel Color Space (Color Scheme?)

In color spaces we have the regular solid colors like solid red (#FF0000), solid green, solid blue, etc. ... Then when we add about 50% white ontop of it, it becomes a "pastel" color space... What ...
3
votes
3answers
345 views

Getting an Accurate Colour Match in RGB

I'm designing a website at the moment. The client's corporate colour is PANTONE Black 2C (made up of 70% Black and 30% Yellow). Now, when printed it comes out very dark but with a hint of yellow. ...
3
votes
1answer
333 views

How to get RYB complementary colors in RGB imaging software

I am looking for a way to get RYB complementary colors in software. This means, complementary color pairs I am looking to get would be: red - green yellow - violet blue - orange However, when ...
3
votes
2answers
179 views

Which RGB profile should I use for my JPG file?

I need to send a image as the title says. But the amount of RGB choices confuse me... There's sRGB built-in, sRGB, adobe RGB, apple RGB... I thought of choosing "Best RGB", is it okay...?
3
votes
1answer
443 views

Is it better to design in 16 bit mode in photoshop?

What is the ideal color mode to design in photoshop cross platform/ multi device product design? Default seems to be 8 bit mode, however 16 bit mode seems to hold more color information. What are the ...
2
votes
1answer
2k views

Converting bar code to CMYK “True Black”

I have .tiff. Part of the .tiff is a bar code. My printer is insisting the bar code be converted to 100%K - CMYK "pure black". (Their words) A couple obstacles: 1) The Bar Code has been scaled up. ...
2
votes
2answers
401 views

Why are my colours outputting so differently in Illustrator

Despite trying various colour profiles across Illustrator and CS5 I seem to keep running into save for web, export and screen-grabs (used as a more accurate last resort) issues where the colours I'm ...
2
votes
1answer
35 views

Global color settings for illustrator / keeps switching to gray

Is there a setting in illustrator that will make all of my colors, in all new projects, RGB? I'm not really sure why it often ends up as grayscale. I only use RGB for web assets and having to change ...
2
votes
3answers
673 views

How to use photoshop file in Indesign for print (having Pantone colors)

I have a question for you guys... :) I have Pantone Colors in my photoshop files. However, I am also using Indesign to do final composing and exporting of the design. I was wondering what is the ...
2
votes
1answer
1k views

Adobe InDesign: how can I get the CMYK code from a color that I have saved in RGB in the swatches?

I'm making a work for school and I have to put together color palettes for some pictures. I also want to indicate the RGB and the CMYK code but when I get a color from a picture with the Eyedropper ...
2
votes
3answers
296 views

RGB to CMYK conversion — more than one way?

Occasionally a science journal asks authors to submit figures as CMYK (JPG or TIFF) for publication. When I have done this in the past, the colors in the figures end up looking very muted and washed ...
2
votes
1answer
688 views

Colour of gradient overlay changes when saving for web and devices in Photoshop CS4

I have an image with a linear gradient overlay (banner image on this page EDF Energy - Our Campaigns. I have set the RGB colour in CS4 to R: 29 G: 31 B: 79. However, when I save the file for web the ...
2
votes
0answers
24 views

How to make a black and white image print in CMYK as it appears in RGB on screen [duplicate]

In Illustrator (CS6/CC) I have an image that is black and white and looks really rich and deep in RGB on screen but after printing appears really gray and loses its depth. Messing about with settings ...
1
vote
2answers
88 views

Is there a printing press that can print a book directly from the RGB space?

I have a book ready for printing. But, of course, it was done in RGB. In fact, I stretched the RGB gamut beyond its normal range in order to make it more painterly etc. When I saw it converted to ...
1
vote
2answers
3k views

Translation of Hex Colours to RGB Colours?

Apparently Illustrator and Photoshop uses different colour settings - Illustrator uses RGB and Photoshop uses some hex/HTML-like colour system with a combination of letters and numbers. Is there any ...
1
vote
1answer
66 views

Proof printing for the web

I had this debate with a colleague and we didn't see anything solid or something from a search that would answer this with certainty so I thought I would open it here. You are designing a website or ...
1
vote
4answers
3k views

Pantone color conversions

I am a bit of a newbie with using pantones and the pantone color guide. I am currently working on a branding project where we will have print material in both pantone and cmyk, and also on screen rgb ...
1
vote
2answers
39k views

how to change the workspace color window from RGB to CMYK mode in Illustrator CS5.1?

I'm using Illustrator CS5.1 and started a new document in RGB mode. When I change the color mode to CMYK under File > Document Color Mode > CMYK Color, the Color window in my workspace doesn't ...
1
vote
1answer
138 views

Illustrator - Using an RGB transparency mask in a CMYK file

My file is CMYK, but it has a Link to an RGB PSD file as a transparency mask. The file renders properly in illustrator (the preview), but whenever I try to export to any other format, the colors are ...
1
vote
2answers
406 views

How do I use a RGB image/layer with a Greyscale image/layer?

I'm using Photoshop CS4 and have a project where I'm using a layer/section of brushed chrome and another adjacent layer/section in charcoal carbon fiber (pattern) background. On the CF layer, I'm ...
1
vote
1answer
41 views

Choosing appropriate text color with given background

I have an image with green background, lets say #5F7642. I need to add small text in red color over that background. The problem is, usual red colors pretty much fade in with the background. I need ...
1
vote
1answer
41 views

What's the math behind gamma in GIMP?

Inside GIMP, Colors -> Levels Click on the "Pick gray point" eyedropper (the middle eyedropper) and then click on a pixel in the image. Then go change to the Red/Green/Blue channels and you'll see ...
1
vote
1answer
48 views

Maximizing saturation while converting CMYK to RGB

I have many designs prepared for print (CMYK), but now I need to present them on a projector. As projectors go, I know most of them have weak contrast, and many of my colors wouldn't be as accented as ...
1
vote
0answers
47 views

What is happening to my colorbar when I open Illustrator?

I usually create figures using something like Matlab or Python; then I use Illustrator for final touch-ups and things. Unfortunately, I'm having trouble with the colorbars when I open my figures in ...
0
votes
2answers
212 views

digital artwork design working in RGB or CMYK (or pantone) for printing?

I am running into a lot of problem on Design my artwork in photoshop in RGB. Then convert to CMYK in PDF format. Then when I print it with print company, Colors are not always right. I am not really ...
0
votes
2answers
11k views

Problem converting color from RGB to CMYK for print

I designed a poster in CorelDraw X5 for printing purposes. I was told by the Printshop guy to use colors only in CMYK. For the most part I did, I don't know why I missed it but I used one color in RGB ...
0
votes
2answers
125 views

Right amount of black for striped background

I am creating a PDF document that has a table with pyjama stripes. The grey stripes are defined using RGB with equal amounts of each colour. I'm want to make the stripes light enough so that you can ...
0
votes
1answer
329 views

Fix colors after or before rgb to cmyk conversion

When I convert from RGB to CMYK in Photoshop as you know colors change saturation and maybe some hue. So basically what the title asks, does it matter when I adjust the colors and saturation via ...
0
votes
2answers
2k views

Set CMYK colors in Photoshop

I have designed a Flyer using Photoshop. First with RGB colors, but I want to change them to CMYK. I use black, white and two pantone colors. Black is used for the text and there is the problem. I ...